This was easy to travel with me as it comes in a cloth bag and can clip onto a bag. But the neck pillow itself didn't offer much support on the plane unfortunately. I'm not a huge fan of neck pillows but was excited for this one and it let me down.
It feels nice and seems to keep my head cool but ONLY works if you exclusively sleep on your side. Even then, it feels a big too bulky like my head is not aligned with my neck and shoulders and if I sleep on my back, it's way too high/bulky and gives me neck pain.